String function and memory function

This chapter focuses on the use and precautions of library functions dealing with characters and strings The processing of characters and strings in C language is very frequent, However, C language itself has no string type. Strings are usually placed in constant strings or character arrays. String constants apply to string functions that ...

Posted by gelwa on Mon, 24 Jan 2022 12:12:13 +0100

The first lock of Java people -- synchronized

Wedge In the last article, we learned the volatile keyword. In this article, we continue to learn another keyword commonly used in concurrent programming - synchronized. synchronized usage First, let's look at several common ways to use synchronized. Use synchronized(this) to decorate code blocks class SyncThread implements Runnable { ...

Posted by Stephen on Mon, 24 Jan 2022 11:30:37 +0100

Return value of [untitled] method

Return value Understanding in reality Go to the bank to withdraw money Enter account number when withdrawing money ----- > call method Enter the number of withdrawals ----- > give actual parameters The money given to you by the bank is completed, and the money given to you by the bank is the return value The keyword to be used in th ...

Posted by ven.ganeva on Mon, 24 Jan 2022 11:21:25 +0100

Learning software testing must know testing tool

1 download address 2 initial interface 2.1 new project Enter the project name you want 2.2 new interface What is ApiPost ApiPost = interface debugging + rapid generation of interface documents + standardized management of interface documents + Mock API + interface process test. Common interface management schemes API documentati ...

Posted by benzrf on Mon, 24 Jan 2022 10:21:41 +0100

What are the common basics of Python? 0 basic common knowledge summary

python reserved word Reserved words are keywords, and we cannot use them as any identifier name. Python's standard library provides a keyword module, which can output all keywords of the current version: >>> import keyword >>> keyword.kwlist ['False', 'None', 'True', '__peg_parser__', 'and', 'as', 'assert', 'async', 'await', ...

Posted by mobile target on Mon, 24 Jan 2022 08:15:25 +0100

[STL]set common usage details

catalogue introduce Introduction to common usage 1. Definition of set 2. Access to elements in the set container 3. set common function analysis 1)insert() 2)find() 3)erase() 4)size() 5)clear() Common use extend introduce Set is translated into a set, which is an internally ordered container without duplicate elements. In the exa ...

Posted by miasma on Mon, 24 Jan 2022 02:07:52 +0100

PAT grade B 1080 MOOC final score (25 points) c language test point analysis

First of all, let's talk about the last test point. It should be noted that the final score is a rounded integer, that is to say, the scores of 98.6 and 98.7 are the same. It's really disgusting and made me work for a long time. 1. All data can be int, and the rounding can be increased by 0.5 and then forcibly converted to int 2. Since th ...

Posted by collette on Mon, 24 Jan 2022 01:47:57 +0100

JVM tuning tool kit: comparison between JDK built-in tools and Arthas online analysis tools

Arthas online analysis, diagnosis and tuning tool In the past, we used to troubleshoot online problems, usually using the jdk's own tuning tools and commands. The most common is the dump online log, which is then downloaded locally and imported into the jvisual VM tool. There are many changes in this operation. The Arhtas tool developed by Ali ...

Posted by everlifefree on Sun, 23 Jan 2022 23:58:34 +0100

Python foundation course day 6

Chapter 5: function usage and underlying analysis Function is also an object, which is used for memory underlying analysis In Python, "everything is an object". In fact, after executing the def definition function, the system creates the corresponding function object. We perform the following procedure and then explain: #T ...

Posted by Jay_Seagrave on Sun, 23 Jan 2022 22:35:29 +0100

Netty learning notes netty advanced-1

preface The notes are based on black horse's Netty teaching handout and some of my own understanding. I think it's very good in the videos I've seen. There's basically no nonsense. Video address: Black horse Netty Sticky bag and half bag 1. Sticking phenomenon Since sticky packets have been introduced in the Nio concept before, I won ...

Posted by bharrison89 on Sun, 23 Jan 2022 17:42:14 +0100